/* ===== Base & Reset ===== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-tap-highlight-color: transparent;
}

body {
    margin: 0;
    overflow-x: hidden;
}

::selection {
    background-color: #c5e8ab;
    color: #1d4710;
}

/* ===== Scroll Reveal ===== */
.reveal {
    opacity: 1;
    transform: none;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    }

    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .reveal.delay-1 { transition-delay: 0.1s; }
    .reveal.delay-2 { transition-delay: 0.2s; }
    .reveal.delay-3 { transition-delay: 0.3s; }
}

/* ===== Card Hover ===== */
.card-hover {
    transform: translateY(0);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-6px);
}

/* ===== Navbar ===== */
#navbar {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(200, 220, 180, 0.3);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

#navbar.scrolled {
    background: rgba(254, 253, 248, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: #4a9f2a;
    border-radius: 1px;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* ===== Mobile Menu ===== */
.mobile-link {
    display: block;
    padding: 0.5rem 0;
    border-bottom: 1px solid #e0f2d1;
    transition: color 0.2s ease;
}

.mobile-link:last-child {
    border-bottom: none;
}

.mobile-link:hover {
    color: #4a9f2a;
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #fdf9ed;
}

::-webkit-scrollbar-thumb {
    background: #c5e8ab;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #9ed87a;
}

/* ===== Focus Styles ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 3px solid #74c04a;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ===== Button Ripple Effect (subtle) ===== */
button, a {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Smooth image loading ===== */
img {
    image-rendering: auto;
    image-rendering: -webkit-optimize-contrast;
}